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author | 2017-08-07 11:39:39 +0800 | |
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committer | 2017-08-07 11:39:39 +0800 | |
commit | 21d72c4a80fe2937d0c4ddd20624b27adbcd989b (patch) | |
tree | e5013ee12f74f8452e01cbff16e7b0158bc456cb /common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js | |
parent | f533e73e2ae32e010b16abdcf7985abaf31ab843 (diff) |
Upload the ESR GUI seed code
Issue-ID: AAI-68
Change-Id: Ia50ce0570c2fabecd77199d4e8454f56fe587c4e
Signed-off-by: lizi00164331 <li.zi30@zte.com.cn>
Diffstat (limited to 'common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js')
-rw-r--r-- | common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js | 643 |
1 files changed, 643 insertions, 0 deletions
diff --git a/common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js b/common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js new file mode 100644 index 0000000..0ee4def --- /dev/null +++ b/common/src/main/webapp/usageguide/appserver/node_modules/express/lib/application.js @@ -0,0 +1,643 @@ +/*! + * express + * Copyright(c) 2009-2013 TJ Holowaychuk + * Copyright(c) 2013 Roman Shtylman + * Copyright(c) 2014-2015 Douglas Christopher Wilson + * MIT Licensed + */ + +'use strict'; + +/** + * Module dependencies. + * @private + */ + +var finalhandler = require('finalhandler'); +var Router = require('./router'); +var methods = require('methods'); +var middleware = require('./middleware/init'); +var query = require('./middleware/query'); +var debug = require('debug')('express:application'); +var View = require('./view'); +var http = require('http'); +var compileETag = require('./utils').compileETag; +var compileQueryParser = require('./utils').compileQueryParser; +var compileTrust = require('./utils').compileTrust; +var deprecate = require('depd')('express'); +var flatten = require('array-flatten'); +var merge = require('utils-merge'); +var resolve = require('path').resolve; +var slice = Array.prototype.slice; + +/** + * Application prototype. + */ + +var app = exports = module.exports = {}; + +/** + * Variable for trust proxy inheritance back-compat + * @private + */ + +var trustProxyDefaultSymbol = '@@symbol:trust_proxy_default'; + +/** + * Initialize the server. + * + * - setup default configuration + * - setup default middleware + * - setup route reflection methods + * + * @private + */ + +app.init = function init() { + this.cache = {}; + this.engines = {}; + this.settings = {}; + + this.defaultConfiguration(); +}; + +/** + * Initialize application configuration. + * @private + */ + +app.defaultConfiguration = function defaultConfiguration() { + var env = process.env.NODE_ENV || 'development'; + + // default settings + this.enable('x-powered-by'); + this.set('etag', 'weak'); + this.set('env', env); + this.set('query parser', 'extended'); + this.set('subdomain offset', 2); + this.set('trust proxy', false); + + // trust proxy inherit back-compat + Object.defineProperty(this.settings, trustProxyDefaultSymbol, { + configurable: true, + value: true + }); + + debug('booting in %s mode', env); + + this.on('mount', function onmount(parent) { + // inherit trust proxy + if (this.settings[trustProxyDefaultSymbol] === true + && typeof parent.settings['trust proxy fn'] === 'function') { + delete this.settings['trust proxy']; + delete this.settings['trust proxy fn']; + } + + // inherit protos + this.request.__proto__ = parent.request; + this.response.__proto__ = parent.response; + this.engines.__proto__ = parent.engines; + this.settings.__proto__ = parent.settings; + }); + + // setup locals + this.locals = Object.create(null); + + // top-most app is mounted at / + this.mountpath = '/'; + + // default locals + this.locals.settings = this.settings; + + // default configuration + this.set('view', View); + this.set('views', resolve('views')); + this.set('jsonp callback name', 'callback'); + + if (env === 'production') { + this.enable('view cache'); + } + + Object.defineProperty(this, 'router', { + get: function() { + throw new Error('\'app.router\' is deprecated!\nPlease see the 3.x to 4.x migration guide for details on how to update your app.'); + } + }); +}; + +/** + * lazily adds the base router if it has not yet been added. + * + * We cannot add the base router in the defaultConfiguration because + * it reads app settings which might be set after that has run. + * + * @private + */ +app.lazyrouter = function lazyrouter() { + if (!this._router) { + this._router = new Router({ + caseSensitive: this.enabled('case sensitive routing'), + strict: this.enabled('strict routing') + }); + + this._router.use(query(this.get('query parser fn'))); + this._router.use(middleware.init(this)); + } +}; + +/** + * Dispatch a req, res pair into the application. Starts pipeline processing. + * + * If no callback is provided, then default error handlers will respond + * in the event of an error bubbling through the stack. + * + * @private + */ + +app.handle = function handle(req, res, callback) { + var router = this._router; + + // final handler + var done = callback || finalhandler(req, res, { + env: this.get('env'), + onerror: logerror.bind(this) + }); + + // no routes + if (!router) { + debug('no routes defined on app'); + done(); + return; + } + + router.handle(req, res, done); +}; + +/** + * Proxy `Router#use()` to add middleware to the app router. + * See Router#use() documentation for details. + * + * If the _fn_ parameter is an express app, then it will be + * mounted at the _route_ specified. + * + * @public + */ + +app.use = function use(fn) { + var offset = 0; + var path = '/'; + + // default path to '/' + // disambiguate app.use([fn]) + if (typeof fn !== 'function') { + var arg = fn; + + while (Array.isArray(arg) && arg.length !== 0) { + arg = arg[0]; + } + + // first arg is the path + if (typeof arg !== 'function') { + offset = 1; + path = fn; + } + } + + var fns = flatten(slice.call(arguments, offset)); + + if (fns.length === 0) { + throw new TypeError('app.use() requires middleware functions'); + } + + // setup router + this.lazyrouter(); + var router = this._router; + + fns.forEach(function (fn) { + // non-express app + if (!fn || !fn.handle || !fn.set) { + return router.use(path, fn); + } + + debug('.use app under %s', path); + fn.mountpath = path; + fn.parent = this; + + // restore .app property on req and res + router.use(path, function mounted_app(req, res, next) { + var orig = req.app; + fn.handle(req, res, function (err) { + req.__proto__ = orig.request; + res.__proto__ = orig.response; + next(err); + }); + }); + + // mounted an app + fn.emit('mount', this); + }, this); + + return this; +}; + +/** + * Proxy to the app `Router#route()` + * Returns a new `Route` instance for the _path_. + * + * Routes are isolated middleware stacks for specific paths. + * See the Route api docs for details. + * + * @public + */ + +app.route = function route(path) { + this.lazyrouter(); + return this._router.route(path); +}; + +/** + * Register the given template engine callback `fn` + * as `ext`. + * + * By default will `require()` the engine based on the + * file extension. For example if you try to render + * a "foo.jade" file Express will invoke the following internally: + * + * app.engine('jade', require('jade').__express); + * + * For engines that do not provide `.__express` out of the box, + * or if you wish to "map" a different extension to the template engine + * you may use this method. For example mapping the EJS template engine to + * ".html" files: + * + * app.engine('html', require('ejs').renderFile); + * + * In this case EJS provides a `.renderFile()` method with + * the same signature that Express expects: `(path, options, callback)`, + * though note that it aliases this method as `ejs.__express` internally + * so if you're using ".ejs" extensions you dont need to do anything. + * + * Some template engines do not follow this convention, the + * [Consolidate.js](https://github.com/tj/consolidate.js) + * library was created to map all of node's popular template + * engines to follow this convention, thus allowing them to + * work seamlessly within Express. + * + * @param {String} ext + * @param {Function} fn + * @return {app} for chaining + * @public + */ + +app.engine = function engine(ext, fn) { + if (typeof fn !== 'function') { + throw new Error('callback function required'); + } + + // get file extension + var extension = ext[0] !== '.' + ? '.' + ext + : ext; + + // store engine + this.engines[extension] = fn; + + return this; +}; + +/** + * Proxy to `Router#param()` with one added api feature. The _name_ parameter + * can be an array of names. + * + * See the Router#param() docs for more details. + * + * @param {String|Array} name + * @param {Function} fn + * @return {app} for chaining + * @public + */ + +app.param = function param(name, fn) { + this.lazyrouter(); + + if (Array.isArray(name)) { + for (var i = 0; i < name.length; i++) { + this.param(name[i], fn); + } + + return this; + } + + this._router.param(name, fn); + + return this; +}; + +/** + * Assign `setting` to `val`, or return `setting`'s value. + * + * app.set('foo', 'bar'); + * app.get('foo'); + * // => "bar" + * + * Mounted servers inherit their parent server's settings. + * + * @param {String} setting + * @param {*} [val] + * @return {Server} for chaining + * @public + */ + +app.set = function set(setting, val) { + if (arguments.length === 1) { + // app.get(setting) + return this.settings[setting]; + } + + debug('set "%s" to %o', setting, val); + + // set value + this.settings[setting] = val; + + // trigger matched settings + switch (setting) { + case 'etag': + this.set('etag fn', compileETag(val)); + break; + case 'query parser': + this.set('query parser fn', compileQueryParser(val)); + break; + case 'trust proxy': + this.set('trust proxy fn', compileTrust(val)); + + // trust proxy inherit back-compat + Object.defineProperty(this.settings, trustProxyDefaultSymbol, { + configurable: true, + value: false + }); + + break; + } + + return this; +}; + +/** + * Return the app's absolute pathname + * based on the parent(s) that have + * mounted it. + * + * For example if the application was + * mounted as "/admin", which itself + * was mounted as "/blog" then the + * return value would be "/blog/admin". + * + * @return {String} + * @private + */ + +app.path = function path() { + return this.parent + ? this.parent.path() + this.mountpath + : ''; +}; + +/** + * Check if `setting` is enabled (truthy). + * + * app.enabled('foo') + * // => false + * + * app.enable('foo') + * app.enabled('foo') + * // => true + * + * @param {String} setting + * @return {Boolean} + * @public + */ + +app.enabled = function enabled(setting) { + return Boolean(this.set(setting)); +}; + +/** + * Check if `setting` is disabled. + * + * app.disabled('foo') + * // => true + * + * app.enable('foo') + * app.disabled('foo') + * // => false + * + * @param {String} setting + * @return {Boolean} + * @public + */ + +app.disabled = function disabled(setting) { + return !this.set(setting); +}; + +/** + * Enable `setting`. + * + * @param {String} setting + * @return {app} for chaining + * @public + */ + +app.enable = function enable(setting) { + return this.set(setting, true); +}; + +/** + * Disable `setting`. + * + * @param {String} setting + * @return {app} for chaining + * @public + */ + +app.disable = function disable(setting) { + return this.set(setting, false); +}; + +/** + * Delegate `.VERB(...)` calls to `router.VERB(...)`. + */ + +methods.forEach(function(method){ + app[method] = function(path){ + if (method === 'get' && arguments.length === 1) { + // app.get(setting) + return this.set(path); + } + + this.lazyrouter(); + + var route = this._router.route(path); + route[method].apply(route, slice.call(arguments, 1)); + return this; + }; +}); + +/** + * Special-cased "all" method, applying the given route `path`, + * middleware, and callback to _every_ HTTP method. + * + * @param {String} path + * @param {Function} ... + * @return {app} for chaining + * @public + */ + +app.all = function all(path) { + this.lazyrouter(); + + var route = this._router.route(path); + var args = slice.call(arguments, 1); + + for (var i = 0; i < methods.length; i++) { + route[methods[i]].apply(route, args); + } + + return this; +}; + +// del -> delete alias + +app.del = deprecate.function(app.delete, 'app.del: Use app.delete instead'); + +/** + * Render the given view `name` name with `options` + * and a callback accepting an error and the + * rendered template string. + * + * Example: + * + * app.render('email', { name: 'Tobi' }, function(err, html){ + * // ... + * }) + * + * @param {String} name + * @param {Object|Function} options or fn + * @param {Function} callback + * @public + */ + +app.render = function render(name, options, callback) { + var cache = this.cache; + var done = callback; + var engines = this.engines; + var opts = options; + var renderOptions = {}; + var view; + + // support callback function as second arg + if (typeof options === 'function') { + done = options; + opts = {}; + } + + // merge app.locals + merge(renderOptions, this.locals); + + // merge options._locals + if (opts._locals) { + merge(renderOptions, opts._locals); + } + + // merge options + merge(renderOptions, opts); + + // set .cache unless explicitly provided + if (renderOptions.cache == null) { + renderOptions.cache = this.enabled('view cache'); + } + + // primed cache + if (renderOptions.cache) { + view = cache[name]; + } + + // view + if (!view) { + var View = this.get('view'); + + view = new View(name, { + defaultEngine: this.get('view engine'), + root: this.get('views'), + engines: engines + }); + + if (!view.path) { + var dirs = Array.isArray(view.root) && view.root.length > 1 + ? 'directories "' + view.root.slice(0, -1).join('", "') + '" or "' + view.root[view.root.length - 1] + '"' + : 'directory "' + view.root + '"' + var err = new Error('Failed to lookup view "' + name + '" in views ' + dirs); + err.view = view; + return done(err); + } + + // prime the cache + if (renderOptions.cache) { + cache[name] = view; + } + } + + // render + tryRender(view, renderOptions, done); +}; + +/** + * Listen for connections. + * + * A node `http.Server` is returned, with this + * application (which is a `Function`) as its + * callback. If you wish to create both an HTTP + * and HTTPS server you may do so with the "http" + * and "https" modules as shown here: + * + * var http = require('http') + * , https = require('https') + * , express = require('express') + * , app = express(); + * + * http.createServer(app).listen(80); + * https.createServer({ ... }, app).listen(443); + * + * @return {http.Server} + * @public + */ + +app.listen = function listen() { + var server = http.createServer(this); + return server.listen.apply(server, arguments); +}; + +/** + * Log error using console.error. + * + * @param {Error} err + * @private + */ + +function logerror(err) { + /* istanbul ignore next */ + if (this.get('env') !== 'test') console.error(err.stack || err.toString()); +} + +/** + * Try rendering a view. + * @private + */ + +function tryRender(view, options, callback) { + try { + view.render(options, callback); + } catch (err) { + callback(err); + } +} |